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Aix-Marseille Université
Institut de Mathématiques de Marseille (I2M) - UMR 7373
Site Saint-Charles : 3 place Victor Hugo, Case 19, 13331 Marseille Cedex 3
Site Luminy : Campus de Luminy - Case 907 - 13288 Marseille Cedex 9

Séminaire

Arboreal Galois representations

Valentijn Karemaker
University of Pennsylvania
https://webspace.science.uu.nl/~karem001/

Date(s) : 23/01/2020   iCal
11h00 - 12h00

Arboreal Galois representations are useful to describe the Galois theory of iterates of rational maps over number fields. These representations were introduced in the 1980s to study the prime divisors of non-linear recurrences (also called dynamical sequences).
We study so-called dynamical Belyi maps; for these rational maps, we fully determine their arboreal Galois representations, and prove a result about the density of prime divisors of the corresponding dynamical sequences.
This is joint work with Irene Bouw and Özlem Ejder.

Emplacement
I2M Luminy - TPR2, Amphithéâtre Herbrand 130-134 (1er étage)

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